121104321 has 16 divisors (see below), whose sum is σ = 179504640. Its totient is φ = 72120960.

The previous prime is 121104317. The next prime is 121104323. The reversal of 121104321 is 123401121.

It is not a de Polignac number, because 121104321 - 2² = 121104317 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 121104321.

It is not an unprimeable number, because it can be changed into a prime (121104323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48876 + ... + 51293.

It is an arithmetic number, because the mean of its divisors is an integer number (11219040).

Almost surely, 2^121104321 is an apocalyptic number.

It is an amenable number.

121104321 is a deficient number, since it is larger than the sum of its proper divisors (58400319).

121104321 is a wasteful number, since it uses less digits than its factorization.

121104321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100216.

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 121104321 is about 11004.7408420190. The cubic root of 121104321 is about 494.7508469622.

Adding to 121104321 its reverse (123401121), we get a palindrome (244505442).

The spelling of 121104321 in words is "one hundred twenty-one million, one hundred four thousand, three hundred twenty-one".